The witnesses to the baptisms of all known children of Peter an Jane were a Peter and Thomas DIDDIP / DIDDIPPS / DIDDUP.
Neither were immediately obvious as witnesses to any of the other RUNCIMAN baptisms in Dunbar around this time, so were possibly relations of Jane's.
Her parents now look to be John SMITH and Betty DIDDUP.
There's a record that by 1813, a Peter DIDDEP was "writer in Haddington" when his daughter Isabella married. She was born in 1793, placing this Peter as born at latest say 1770, which would be a trifle young to witness a 1780 baptism, but he could be older of course
Source: S103 OPR East Lothian Scotlands People RUNCIMAN Marriages Repository: #R146
↑ Source: #S2921 Page: Birth 25th Bap. 28th Feb 1791 Thomas s/o Peter RUNCIMAN & Jean SMITH, Dunbar, East Lothian, extracted May 2013
↑ Source: #S2868 Page: Marr. 2 Apr 1813 Isabella d/o Peter DIDDEP Esq writer Haddington; Hugh FRASER Esq agent of the Bank of Scotland, Haddington, East Lothian, from The Scots Magazine and Edinburgh Literary Miscellany, Volume 75, extracted May 2013
↑ Source: #S1597 Page: Bap. 23 Jan 1751 Jane d/o John SMITH & Betty DIDDUP, Dunbar, East Lothian, from Scotland, Births and Baptisms, 1564-1950 batch C11706-4 film 1067796, extracted from index May 2013
Thank you to L Henderson for creating WikiTree profile Runciman-513 and merging with Runciman-415 after the import of RUNCIMANThomasGRIEVEAlison4WikiTreePlaceUpdated.ged on Jun 15, 2013.
Thanks to Rick Heiser for starting this profile. Click the Changes tab for the details of contributions by Rick and others.
It may be possible to confirm family relationships with Beatrice by comparing test results with other carriers of her mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Beatrice: